With cards like Arcane Signet, Chromatic Lantern, and Mox Amber you can ensure you always have the right color mana for casting your opponent's cards, even without treasures.
Even detaching Nikitama while it's an Xyz Material from any Rank 4 Xyz Monster will still satisfy its drawing effect
Top 5 Mana Ramp Cards Commander players love their mana rocks, and quite often one player will go off with a bunch of mana rocks early on, setting up a really big turn way ahead of schedule
R manga, the Wicked Dreadroot might look familiar to you and youd be right to recognize it
If this card would be destroyed, (by battle or by card effect) you may detach 1 Xyz material from it instead
But what makes Rampage Dragon even more threatening is that once per turn, the turn player can banish two LIGHT Monsters from the deck to allow CRD to attack twice that same round